Drawing-pot for glass.



R. L. & F. J. FRINK.

DRAWING POT FOR GLASS. APPugAnoN men FEB. n. 1908.

Patented Dec. 28, 1915.

ROBERT L. FRINK AND FRED J. FRINK, OE CLEVELAND, OHIO.

DBAWING-POT "ESE. GLASS.

mama-m Specification of Letters Patent.

Patented Dec, 28, 19115,

Application filed February 17, 1908. SerialNo. 416,230.

To all whom it may concern Be it known that we, ROBERT L. FRINK and FRED J. Fnrnn, citizens of the United States, residents of Cleveland, county of Cuyahoga, State of Ohio, have jointly invented a new and useful Improvement in Drawing-Pots for Glass, of which the fol-- inders involved in the course of such manufacture. In' such drawing operation a quantity of the molten glass or metal is placed in a pot and a bait then lowered into the metal and then raised, such metal adhering thereto and being drawn upwardly in the form of a sheet or cylinder depending upon the shape of the bait. The requisite metal for each drawing operation is supplied to the pot either through a direct connection" with the tank wherein the bulk of the metal is contained, or else by dipping the metal over from said tank'to the pot. In the latter case particularly there is apt to be in the course of time, owing to the cooling influence of the atmosphere, an accumulation of congealed metal or glass within the pot which it becomes necessary to-remove before proceeding, by external application of heat thereto so as to enable such accumulation to I drain off.

The present invention has as one of its objects the provision of means whereby this operation of draining or. melting down, the accumulated glass, may be much facilitated in connection with drawing pots into which the metal is thus dipped otherwise placed for the drawing operation-5:,

To the accomplishment of this and related objects, said invention, then, consists of the means hereinafter fully described and particularly pointed out in the claims.

The annexed drawing and the following description set forth in detail certain mechanism embodying the invention, such dis.- closed means constituting, however, but one of various mechanical forms in which the principle of the inv ntion may be used.

In said annexed 5*...awing: Figure 1 1s a plan. view of an apparatus involving our invention; Fig. 2 is a side elevation and partial section of the same; and Fig. 3 shows a detail of construction.

Having reference to the figures of such drawing, A will be seen to designate a base in the form of a pedestal, on the upper face of which there" is provided an upwardly pro- JeCting stud or shaft a surrounded with a ball thrust-bearinga. Rotatably mounted upon such shaft and resting on such bearing is a cast iron block B by means of which the frame B- designed for the support of the drawing pots or vessels C is carried. This frame comprises in its approved form simply two parallel transversely disposed beams or channels Z) secured one on each side oft-he block. To the outer ends of these transverse beams are secured parallel longitudinally extending'beams or channels 6 forming arms by which the vessels aforesaid are borne. In the detailed construction of the latter we avail ourselves of the principle fully described in connection with the stationary pot shown in Patent 941,512,

granted to It. L. Frink, November 30th, 1909, methods of and means for manufacture of window glass, such principle being the con servation of the heat of the metal, instead of the application of heat fromwithout, in

order to maintain such metal atthe necessary drawing temperature. Having reference particularly to the sectional view of one such vessel (3, presented in Fig, 2, the same will be seen to consists of an exterior metal jacket 0 within which, and spaced therefrom, is supported a vessel 0 of clay or other suit able refractory material wherein the molten glass is designed to be contained. In the space intervening between such vessel and jacket is packed a layer 0 of mineral wool, ashes: tos, or like niaterial, which serves to thoroughly insulate the vessel 0 from the chilling influence of the atmosphere. A central aperture a normally closed by a plugc is provided in the bottom of each vessel for draining the same. To enable the vessel to be supported in the arms of the frame B each such shell 0 is provided on opposite sides with lugs, or brackets, 0 adapted to rest on the respective side beams b constimg screws 72 mounted in brackets b secured to the upper'face of the beams as will be' readily understood. Such adjustment, while useful in balancing the device as a whole, has as its more particular use, the exact alining of the pot with the drawing means, when in operative position with respect to the latter.

Correct location of the vessel 0 in its circular path of movement is secured by ,means of a short track-section or guide-way E,

Fig. 3, adjustably mounted beneath the drawing station, being held between two ing formed with a recess or notch e on its brackets e e by means of adjusting screws 6' a. .Each vessel C is provided on" its under side with a spring pressed plunger 6 that is held in a suitable casing 13 located at a proper radial distance from the axis of rotation of the device to cause such plunger to pass across guide-way E as the device is rotated. The lower end of plunger 6 bears a roller 6, and the elevation of guide-way E is such that this roller is caused to mount the same and thereby compress the spring by which it is actuated, The guide-way beupper, or traction, surface, it will be seen that as the roller passes-along such surface it will enter this notch and in this way defi-' nitely stop and center the vessel.

Rotation of the frame B, and thus of the two vessels C carried thereby, may be effected in any convenient way; in Fig. 2, a.

the one indicated to the right in Fig. 2

' larly located beneath a hood D above; or else a position intermediate between the positions of the respective pots in such figure. In one of the two positions, however, there shown as being occupied by the frame, the one vessel is located beneath the drawing means D, indicated diagrammatically only, and the other vessel is simiare connected suit-able heating means in the form of burners (Z whereby-the interior of the vessel may be heated and the accumulation of solidified glass melted down so that by removing the ,plug in the bottom of the vessel the latter may be drained preparatory to being filled with a fresh supply of'metal,

or the glass thus melted down and rendered homogeneous in character so as to be utiwith which lized with such fresh supply in the next drawing operation the latter method of utilizing such melted down material being the preferred one. The two vessels occupy the stations in questionalternately, as will be obvious, so that there need be little or no interruption of the drawing operation, the one pot being prepared for refilling while the other is employed in connection with such drawing operation.

The hood D" may be supported by rods depending from the frame. (not shown) on which rest and which support the guides of the drawing machine,'or by any other suitable means.

It will of course be-understood that our invention .is not limited to use in the specific relat on in which we have above described a it, but that it may be employed generally in glass manufacturewhere a working pot requires to be intermittently supplied with metal from which such metal is withdrawn, either by drawing means of the kind described, or by blow-pipes, or other working tools. I

We are aware that working pots have heretofore been devised for attaining the same results as hereinsought, one known construction embodying a member of refractory material mounted on trunnions and provided on opposite faceswith cavities forming working pots, it being designed that one such pot should be utilized forudrawing glass while the other is being drained incidentally to the application of heat thereto from below. Such application of heat being primarily designed to maintain metal in the upper receptacle at the proper temperature, while at the same time obviously melt ofi any'cooled glass adhering to the lower receptacle. compared with .this .apparatus our present its device presents numerous advantages, such advantages arising-first of all byapplying the proper heat insulation to the'construction of thepot so as to obviate the necessity of maintaining the temperature thereof by extraneous heating means during the drawand secondly from -the fact for melting down the cooled glass in the pot is applied from above, whereby such lass may be' melted down into a homogeneous mass, and whether then drained from the receptacle or not, the dan-' ger of bubbles and blisters, where the other ing, operation, that the heat method of draining is pursued, practically 129 entirely obviated. We should also call attention to the exact adjustment of the pot with reference to the drawing apparatus that is obtainable by the construction hereinbefore described.- This adjustment, as is well'understood, is essential to drawing a cylinder of equal thickness at all points in its'periphery, a variation of a, fraction of an inch in'the distance of the'cylin'der, as it is being drawn, from the. walls of the pot regards the mechanism herein disclosed, proconducing to an uneven product in this particular.

Other modes of a plying the principle of our invention may be employed instead of the one explained, change being made as port, a plurality of pots mounted thereon,

an insulating covering for each pot and means independent of the pot or support for heating the pots one at a time.

, 2. The combination with a pivoted support, 'a plurality of receptacles carried thereby, an insulating lining for each receptacle,

a glass drawing pot within each insulated receptacle, and means. independent of the pots or their support for heating the pots one at a time.

3.'In mechanism of the class described, the combination of drawing-means, downwardly directed heating means, a rotatable support. movable in a substantially horizontal wplane, said support including two oppositely disposed radially extending arms, a glass drawing receptacle borne by each of said arms and adapted tobe presented beneath said drawing and heating means alternately upon rotation of said support,

said receptacles being independently adjustable longitudinally of said arms to permit centering of the same beneath said drawing means, and means for stopping said receptacles beneath said drawing means, such stopping means comprising a guide-way vformed with a recess and a member'borne by each receptacle adapted to engage such recess. i

4;. In mechanism of the-class described, the combinationof drawing means, downwardly' directed heating means, a rotatable support movable in a substantially horizontal plane, said support including two oppositely disposed radially extending arms,

a glass drawing receptacle borne by each of said arms and adapted to be presented beneath said drawing and heating means alternately upon rptation of said support, said receptacle being independently adjustable longitudinally of said arms to permit centering of the same beneath said-drawing means, and means for stopping said receptacles beneath said drawing means, such stopping means comprising a guide-way disposed beneath the path of travel of said receptacles adjacent to the drawing station and having a recess in its upper face and a spring-pressed plunger borne by each receptacle and adaptedto engage such recess as the receptacle passes over said guide-way,

the latter being longitudinally adjustable to efl'ect such engagement in difi'erent positio ns of the receptacle.

5. In mechanism of the class described, the combination with drawing means, heating means, a pivoted support movable in a substantially horizontal plane, and a glass Y 'stantially horizontal plane, a glass drawing receptacle located near each end of said supportand each adapted to be alternately presented to the drawing and heating means, and adjustable means for stopping the rotation of the pivoted support whereby the receptacles will be properly located with ,respect to the drawing and heating means.

7. A mechanism of the class described, a plurality of receptacles adjustably mounted upon a pivotal support, said receptacles being mounted for adjustment in a plurality of directions, an insulating lining for each receptacle and glass-drawing pots permanently located within such insulated receptacles. i

8. A mechanism of the class described, a plurality of receptacles adjustably mounted upon a pivoted support, an insulating lining for each receptacle, a glass drawing pot permanently located within each insu lated receptacle, and means independent of the pot receptacle or support for heating the glass-drawing pots one at a time.

9. The combination with a pivotal support movable in substantially horizontal plane, said support including two connected parallel arms, of metal jackets lined with insulating material and borne by and between said arms and near the two ends of the latter, and glass-drawing pets, substantially permanently located within said jackets. I

10. In mechanism of the class described, the combination with a glass-drawing means, a receptacle for glass, an insulated supporting means for said receptacle, and a metal jacket carrying said insulating means and in contact therewith, raclial sup- Ill] a manner as and for the purpose set forth,

and automatic adjusting means for centering the receptacle beneath the drawing.

means.

Signed by us this 18th day of January,

ROBERT L. FRINK. FRED J. FRINK.

Attested by MARY ISRAEL, JNO. F. OBERILIN.

Qopics of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents, Washington, D. G. 

